Incubator



FIG. 1 is a perspective view of an incubator showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a right side view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Any shading and cross-hatching are not features of the design but are utilized to illustrate the surface contours of the incubator design in the drawings.

The broken lines in the drawings depict portions of the incubator that form no part of the claimed design. 

CLAIM The ornamental design for an incubator, as shown and described. 